Well I had my maiden voyage cook on my UDS yesterday...I wanted to do something simple just in case the UDS didn't perform.
Anyway...built exactly to specs as the UDS on the Pickled Pig forum...I put in 1/2 a fire basket of lump Royal Oak charcoal (green bag) and then started my charcoal starter chimney with 12 briquettes of Royal oaks charcoal (red bag)..and then 5 pieces of cherry wood on top of all that in my fire basket.
I hav 24 chicken legs season with jerk sauce on the grate. I got the smoker up to 230F..and capped the 2 lower vents that use pipe caps..and then my ball valve that runs up the side of my barrel, so I don't have to bend over..I left all the way open...temps dropped down to 215F....and so I uncapped one vent..and closed the ball valve half way and she heated up to 270F....
It seems that I can't get the happy medium with my vent setup. It either cools down too much or heats up too much.